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A sprain, ligament strain or twist of the knee is an injury to the ligaments of the knee due to overstretching, excessive stretching, twisting or tearing.
It occurs when the joint area is affected by mechanical action (the demand of a rough movement, excessive opening or closing of the joint, unnatural movement) or by violence (fall, blow).
It causes inflammation and pain (initially intense, then diminishing), leading to functional inability and even temporary paralysis of the knee.
It is diagnosed by a medical history, physical examination of the knee and imaging tests such as x-rays and/or MRI.
Depending on the type of sprain, treatment may be conservative (rest, painkillers) or surgical.
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